DE60208026D1 - DOPPLER SPREIZING / SPEED ESTIMATION IN MOBILE WIRELESS COMMUNICATION DEVICES AND METHOD THEREFOR - Google Patents

DOPPLER SPREIZING / SPEED ESTIMATION IN MOBILE WIRELESS COMMUNICATION DEVICES AND METHOD THEREFOR

Info

Publication number
DE60208026D1
DE60208026D1 DE60208026T DE60208026T DE60208026D1 DE 60208026 D1 DE60208026 D1 DE 60208026D1 DE 60208026 T DE60208026 T DE 60208026T DE 60208026 T DE60208026 T DE 60208026T DE 60208026 D1 DE60208026 D1 DE 60208026D1
Authority
DE
Germany
Prior art keywords
wireless communication
communication devices
mobile wireless
doppler
spreizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE60208026T
Other languages
German (de)
Other versions
DE60208026T2 (en
Inventor
Alexandre Mallette
Paul Oliver
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Mobility LLC
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of DE60208026D1 publication Critical patent/DE60208026D1/en
Publication of DE60208026T2 publication Critical patent/DE60208026T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A method for estimating Doppler spread in mobile wireless communication devices, for example in CDMA or W-CDMA cellular communication systems, with improved noise immunity. The Doppler spread estimation is based on an estimated value of an autocorrelation or autocovariance at a first lag (210) and at a second lag (220), the magnitude of which is greater than the first lag. A first ratio is determined (250) between a first difference (230) and a second difference (240). The estimated Doppler spread is generally proportional to a square root (260) of the first ratio, and is scaled (270) by a multiplicative factor that depends on whether the estimated function is an autocorrelation or autocovariance function.
DE60208026T 2001-05-31 2002-04-18 DOPPLER SPREIZING / SPEED ESTIMATION IN MOBILE WIRELESS COMMUNICATION DEVICES AND METHOD THEREFOR Expired - Lifetime DE60208026T2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/871,116 US6636574B2 (en) 2001-05-31 2001-05-31 Doppler spread/velocity estimation in mobile wireless communication devices and methods therefor
US871116 2001-05-31
PCT/US2002/012248 WO2002100060A1 (en) 2001-05-31 2002-04-18 Doppler spread/velocity estimation in mobile wireless communication devices and methods therefor

Publications (2)

Publication Number Publication Date
DE60208026D1 true DE60208026D1 (en) 2006-01-19
DE60208026T2 DE60208026T2 (en) 2006-07-13

Family

ID=25356765

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60208026T Expired - Lifetime DE60208026T2 (en) 2001-05-31 2002-04-18 DOPPLER SPREIZING / SPEED ESTIMATION IN MOBILE WIRELESS COMMUNICATION DEVICES AND METHOD THEREFOR

Country Status (9)

Country Link
US (1) US6636574B2 (en)
EP (1) EP1397897B1 (en)
CN (1) CN1529970B (en)
AT (1) ATE313198T1 (en)
BR (1) BR0210021A (en)
DE (1) DE60208026T2 (en)
RU (1) RU2269206C2 (en)
TW (1) TW586325B (en)
WO (1) WO2002100060A1 (en)

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US7218934B2 (en) * 2002-02-14 2007-05-15 Nokia Corporation Mobile station speed estimation
US20030153274A1 (en) * 2002-02-14 2003-08-14 Carsten Juncker Doppler spread estimation
DE102004026072B4 (en) * 2004-05-25 2007-02-15 Micronas Gmbh Method and apparatus for motion compensated noise estimation in mobile wireless transmission systems
KR100608109B1 (en) * 2004-06-28 2006-08-02 삼성전자주식회사 Apparatus and method for estimating doppler frequency and moving velocity of a wireless terminal
EP1829244B2 (en) * 2004-12-15 2013-01-16 Telefonaktiebolaget LM Ericsson (publ) Doppler estimation
US7573964B2 (en) * 2004-12-16 2009-08-11 Motorola, Inc. Channel estimator with extended channel bandwidth
US8094605B2 (en) * 2007-03-30 2012-01-10 Livetv, Llc Aircraft communications system with network selection controller and associated methods
KR101488787B1 (en) * 2008-07-08 2015-02-03 삼성전자주식회사 Apparatus and method for estimating doppler frequency in mobile communication terminal
US8897385B2 (en) * 2009-10-20 2014-11-25 Maxlinear, Inc. Doppler estimator for OFDM systems
CN101808070A (en) * 2010-04-13 2010-08-18 北京大学 Receiver of OFDM system and moving speed estimation method thereof
CN101917363B (en) * 2010-08-10 2013-04-24 上海华为技术有限公司 Method and device for estimating Doppler frequency shift
WO2012060751A1 (en) * 2010-11-04 2012-05-10 Telefonaktiebolaget Lm Ericsson (Publ) A radio base station and a method therein for estimating a doppler spread
RU2565237C1 (en) * 2014-08-07 2015-10-20 Федеральное государственное бюджетное учреждение науки Тихоокеанский океанологический институт им. В.И. Ильичева Дальневосточного отделения Российской академии наук (ТОИ ДВО РАН) Evaluation of complex signal carrier frequency doppler shift
RU2614192C1 (en) * 2015-12-02 2017-03-23 Акционерное общество "Раменское приборостроительное конструкторское бюро" Method of inertial data estimation and its correction according to measurement of doppler velocity sensor
US10914834B2 (en) 2017-05-10 2021-02-09 Google Llc Low-power radar
US10754005B2 (en) * 2017-05-31 2020-08-25 Google Llc Radar modulation for radar sensing using a wireless communication chipset
US10795009B2 (en) 2017-05-31 2020-10-06 Google Llc Digital beamforming for radar sensing using wireless communication chipset
US10782390B2 (en) 2017-05-31 2020-09-22 Google Llc Full-duplex operation for radar sensing using wireless communication chipset
EP3928182A1 (en) 2019-05-20 2021-12-29 Google LLC Mobile device-based radar system for providing a multi-mode interface and method therefor
WO2020256692A1 (en) 2019-06-17 2020-12-24 Google Llc Mobile device-based radar system for applying different power modes to a multi-mode interface

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Also Published As

Publication number Publication date
DE60208026T2 (en) 2006-07-13
US6636574B2 (en) 2003-10-21
US20020181553A1 (en) 2002-12-05
ATE313198T1 (en) 2005-12-15
EP1397897A4 (en) 2005-02-02
EP1397897A1 (en) 2004-03-17
RU2269206C2 (en) 2006-01-27
RU2003134627A (en) 2005-05-27
BR0210021A (en) 2004-08-10
WO2002100060A1 (en) 2002-12-12
CN1529970B (en) 2012-11-28
EP1397897B1 (en) 2005-12-14
CN1529970A (en) 2004-09-15
TW586325B (en) 2004-05-01

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Owner name: MOTOROLA MOBILITY, INC. ( N.D. GES. D. STAATES, US